Quantum Physics · Physics & Astronomy
Quantum Physics
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3,630 papers, from 4 September 2026 to 5 November 2026: 3,630 arXiv preprints.
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Newest papers, page 9
Unruh-DeWitt detectors in a delocalized massive shell
We construct a model for the response of a detector to vacuum fluctuations inside a massive hollow shell in a superposition of positions.Quantum Noise Engineering in Advanced LIGO
Advanced LIGO is a gravitational-wave detector with extreme sensitivity, operating close to the quantum limits of optical measurement.Particle-loss error correction using $2^l$-step states generated via particle-number-resolving measurement schemes
We present an iterative scheme for generating finite superpositions of Fock states whose photon numbers differ by $2^l$ ($2^l$-step states).Field-aligned measurement removes the anisotropy barrier of sample-based quantum subspace solvers for magnetized-plasma heat conduction
Sample-based quantum subspace methods construct a small subspace from measured basis states and solve the target problem classically within it.Nonequilibrium Spin-Glass Order in a Long-Range Quantum Ising Glass and Its Sensitivity to Noise
We study spin-glass order after a transverse-field quench in a long-range quantum Ising glass.Dithered Belief Propagation for Real-Time Quantum Memory Decoding
We introduce dithered belief-propagation decoding for circuit-level quantum memory to mitigate the oscillations and trapping behavior that limit standard belief-propagation (BP) decoders for qLDPC…Improving Gravitationally Induced Entanglement in Interferometric Configurations
Proposals to detect gravitationally induced entanglement between massive particles offer a promising pathway toward probing the quantum nature of gravity.Scalable Transpilation for Overcoming Restricted Connectivity in Distributed Superconducting Quantum Architectures
Distributed Quantum Computing (DQC) offers a promising pathway to scale superconducting quantum hardware, but restricted inter- and intra-module connectivity creates a major transpilation bottleneck.Thermally-driven quantum reservoir computing
Heat generation limits computation, classical and quantum, from single logic gates to entire data centers.Coupling between molecular exchange qubits
Spin triangles are promising systems for defining and manipulating scalar degrees of freedom, such as chirality, partial spin sums, or combinations between the two.Anti-distinguishability of quantum channels
We study single-query perfect anti-distinguishability/exclusion tasks of finite quantum channel ensembles, primarily using associated Choi operators and process POVMs.Entanglement Allocation for Quantum Integrated Sensing and Communication
Jointly supporting communication and distributed sensing over a shared, limited pool of entanglement resources is an attractive prospect for future quantum networks.Quantum identity authentication protocol via perturbed probability amplitudes
Quantum identity authentication is an effective solution for establishing mutual trust between communicating parties in the post-quantum era.Hardware-Efficient Reinforcement-Learned Scheduling for Quantum LDPC Decoders
Quantum low-density parity-check (QLDPC) codes are promising for fault-tolerant quantum computing, but their decoding algorithms present significant hardware implementation challenges.Initialization-controlled fault sensitivity and force-balance plateaus in noisy variational quantum optimization
We study deep variational circuits for a periodic Heisenberg chain under local gate depolarization, at depths where noiseless training is coherently exact.Negative Junction Logarithms in Scalar Multipartite Entanglement
A three-region junction in a free real relativistic scalar vacuum in $2+1$ dimensions yields a strictly negative logarithmic contribution to genuine tripartite Rényi multi-entropy for every integer…Thermally enhanced magnon-phonon resonance in van der Waals antiferromagnet FePS3
Strong coupling between collective excitations provides a route to controlling quantum states of matter, yet its evolution under thermal fluctuations remains poorly understood.On the universality of entanglement entropy in quantum field theory
The standard definition of entanglement entropy in quantum field theory requires regularizing the entangling surface and factorizing the Hilbert space, which in turn involves a choice of boundary…Information-Geometric Representation of Upper Bounds on Fluctuation Growth in Open Quantum Systems
Building on our earlier results for closed quantum systems, we investigate the dynamical evolution of quantum fluctuations and their connections to Fisher information and the quantum operations…Reasoning about Shared-Qubit Concurrency in Quantum Computing
In this paper, we develop a semantic model for the parallel execution of quantum circuits, providing a formal foundation for studying shared-qubit concurrency in quantum computing.